计算:(-2000又5/6)+(-1999又2/3)-(-4000又3/4)-(+1又1/2)

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计算:(-2000又5/6)+(-1999又2/3)-(-4000又3/4)-(+1又1/2)

(-2000又5/6)+(-1999又2/3)-(-4000又3/4)-(+1又1/2)
=(-2000又5/6)+(-1999又2/3)+(4000又3/4)+(-1又1/2)
=[(-2000)+(-1999)+4000+(-1)] + [(-5/6)+(-2/3)+3/4+(-1/2)]
=0+[(-10/12)+(-8/12)+9/12+(-6/12)]
=(-5/4)

4000又5/12